Sand-molding machine.



PATBNTED JAN.-l5, 1907.

J. PIGKLES. SAND MOLDING MACHINE. APPLICATION FILED 0OT.18. 1905.

3 SHEETS-SHEET l.

No. 841 569. PATENTED JAN. r. J. PIGKLES.

SAND MOLDING MACHINE.

APPLICATION FILED 00118, 1905.

3 SHEETS-SHEET 2.

IS PETERS cm. u msmucrarv, n. c.

I PATENTED JAN. 15, 1907.

J. PIOKLES.' SAND MOLDING MACHINE. AIIT'PLIOATION FILED 001218, 1905.

I 3 BHEETEFSHEET 3.

urn II II I JAMES PIOKLES, OF BRADFORD, ENGLAND SAND-MOLDING MACHINE.

Specification of Letters Patent.

Patented Jan. 15, 1907.

Application filed October 18,1905. Serial No 283,228.

To add w/wm it may concern;

Be it known that I, JAMES PloxLns, a sub ject of the King of Great Britain, and a resident of 11 Moor View Terrace, Killinghall Road, Bradford, in the county of York, England, have invented certain new and useful Improvements in Sand-Molding Machines, of which the following description, together with the accompanying sheets of drawings, is a specification.

This invention has reference to a sandmolding machine of a class which enables the user or operative to manually ram the sand within the boxes or to employ pressure-exerting devices provided on the machine for carrying out such ramming actions; and said invention consists in mounting and arranging in combination the table which carries the pattern-plate to form the mold, the pressureexerting devices, and a table for receiving the sand-mold when produced in such manner that the employment of these several parts by the operative is greatly facilitated, and the liability of the sand-mold being damaged by the falling into or upon it of any loose sand or other matter after it has been formed is entirely obviated.

In carrying my invention into effect I make use of the devices hereinafter described and as illustrated by the accompanying sheets of drawings, in which Figures 1 and 2 are front and end elevations, respectively, of a machine constructed and arranged in accordance with my invention. Fig. 3 is a sectional end elevation of certain parts of the machine and shows the pressureexerting devices in position, as when ramming the sand to form the sand-mold. Fig. 4 is a similar view to Fig. 3, but shows the table upon which the mold is supported when be ing formed and the table which receives the mold when finished, as hereinafter explained. The pressure-exerting mechanism is omitted from Fig. 4:.

The end frames A A, standards B B, and the cross-stay C, with its projecting arm D, form the fixed framework of the machine.

The pressure-exerting device or rammer consists of the ramming-plate a, mounted upon the screwed adjusting-arms b I), having their lower extremities b I) fixed upon the cross-shaft c, which is acted upon by the counterbalancing-weight d, mounted upon the lever (Z, pivotally carried by the swinging link d so that its vertical movements in the slots A of the end frame A A maybe thereby rendered more easy to carry out by the operative, as hereinafter explained.

The arms b b are arranged to be operated by the handle 6, which is fixed upon the shaft 1, extending from one end frame A to the other A. On or near the extremities of this shaft f are secured the arms 9 g, which are coupled by the links it h to the arms I) b, so that the movements of the handle 6 may be by these several parts transmitted to the rammer a. These parts assume their normal positions (shown by Figs. 1 and 2) when the upper surface of the molding-box lc or table it is desired to be clear or open to allow the filling of the box is with sand or for other purposes.

The table 7r, which carries the pattern 8, which is fitted to it in the wellknown man ner, is mounted by its pivotal shafts 7C2 taking into bearings or standards B B, and on or in connection with this table 10, I provide the usual means for detachably securing the molding-box is upon it, so that as said table is revolved upon its shafts k 70 the box is may be carried with it until released therefrom by its securing means, as is well understood.

Beneath the table 1c, 1 mount another table m, which is supported by the screwed adjusting-bolts m m m, secured to the crosspieces a n, which are formed to slide upon, so as to be guided by the projecting arm D, secured to or forming part of the cross-stay C. The arm D takes the form of a guide, onwhich is mounted a sliding frame 10, to which the cross-pieces a n are connected to form a structure movable as a unit. The crosspieces n n are operated by the links 12 p, pivotally connected to the sliding frame 10, and to the arms (1 q, fixed upon the shaft 1, which is mounted to oscillate in bearings on the end frames A A. This shaft 7" has the handlelever r and counterbalancing weighted lever r fixed upon it in order that the user may operate it, as hereinafter described.

Assuming that an empty box is has been placed over the pattern-plate 8 while the several parts are in their normal positions, (shown by Figs. 1 and 2,) the molding-sand is then placed in said box in the usual manner, on which the user moves the handle 6 to bring the rammer a over and down upon the box is to ram said sand, as desired, at .which time or by which movement the parts operated by the handle 6 will have been brought into the positions shown byFig. 3. On these pressing lieved of its attachment to the table 7c and so will rest upon the table m, which on being lowered through the handle 1', being again operated, will bring with it the box 7c and the sand-mold within it more accurately and with greater precision than it is possible for the operative to raise said sand-mold and box from oil the pattern .9 should the table k be fixed as heretofore, while by the table 7c thus being turned over during the withdrawal of the mold from the pattern it acts as a shield or protector for said mold, as hereinbefore described.

By this construction it will be seen. that the guides for the rammer are formed in the end standards, while the guide for the table on is located intermediate of the end stand.- ards. There is therefore no liability of an interference between the two structures in operation,nor is there a requirement of an enlarged frame, such as would be required were both guides located in the end standard.

' Such being the nature and object of my invention, What I claim is- A sandmolding machine comprising a supporting-frame formed of end. standards and a cross-stay; a guide carried by said cross-stay and extending downwardly therefrom intermediate the end standards; a sliding frame carried by said guide, said sliding frame carrying a table; a revoluble table supported above said sliding table; a rammer movable from and to a position above said revoluble table, said rammer having its pivot end mounted within slots formed in said end standards, whereby a vertical limited movement may be imparted to said rammer; means for moving said rammer to its position above the revoluble table and. then vertically in a downward direction; and means for moving said sliding table vertically to a point in juxtaposition to said revoluble table.

In testimony whereof I have aflixed my signature in presence of two witnesses.

JAMES PICKLES.

Witnesses:

R1). B. NIOHOLLS, JOHN VVHITEHEAD. 

